http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Agricultural Research Service (ARS) scientists in Texas are staying up late to search for beneficial insects that feed on crops pest eggs at night. http://www.physorg.com/news174145326.html Biology Wed, 07 Oct 2009 14:42:32 EST news174145326 (AP) -- Two Canadian scientists whose discovery of stem cells has paved the way for controversial research could be candidates for the 2009 Nobel Prize in medicine, the winners of which will be announced Monday. http://www.physorg.com/news173874782.html Biology Sun, 04 Oct 2009 12:00:01 EST news173874782 (PhysOrg.com) -- Geologists have discovered hundreds of fossilized nests each containing clutches of eight dinosaur eggs. The eggs were located in sand banks in Tamil Nadu in Southern India. http://www.physorg.com/news173683554.html Other Sciences Fri, 02 Oct 2009 10:00:01 EST news173683554 Reptiles are not known to be the most social of creatures. But when it comes to laying eggs, female reptiles can be remarkably communal, often laying their eggs in the nests of other females. New research in the September issue of The Quarterly Review of Biology suggests that this curiously out-of-character behavior is far more common in reptiles than was previously thought. http://www.physorg.com/news171193389.html Biology Thu, 03 Sep 2009 11:10:01 EST news171193389 A team of Michigan State University researchers has developed a new, more efficient way of cloning zebra fish, a breakthrough that could have implications for human health research. http://www.physorg.com/news170862315.html Biology Sun, 30 Aug 2009 14:46:16 EST news170862315 Scientific dogma has long asserted that females are born with their entire lifetime's supply of eggs, and once they're gone, they're gone. New findings by researchers at Fred Hutchinson Cancer Research Center, published online Aug. 27 in Science, suggest that in nematode worms, at least, this does not hold true. http://www.physorg.com/news170601450.html Biology Thu, 27 Aug 2009 14:18:04 EST news170601450 Wile E. Coyote might not have been able to catch up with the roadrunner on the Saturday morning cartoons, but one Texas AgriLife Research scientist has had no problems. http://www.physorg.com/news168271311.html Biology Fri, 31 Jul 2009 15:20:04 EST news168271311 A protein in influenza virus that helps it multiply also damages lung epithelial cells, causing fluid buildup in the lungs, according to new research from the University of Alabama at Birmingham (UAB) and Southern Research Institute . Publishing online this week in the journal of the Federation of American Societies for Experimental Biology, the researchers say the findings give new insight into how flu attacks the lungs and provides targets for new treatments. http://www.physorg.com/news167061817.html Medicine & Health Fri, 17 Jul 2009 15:50:02 EST news167061817 (PhysOrg.com) -- Suspending a life in time is a theme that normally finds itself in the pages of science fiction, but now such ideas have become a reality in the annals of science. http://www.physorg.com/news167059896.html Biology Fri, 17 Jul 2009 14:32:10 EST news167059896 Contrary to predictions, males of high genetic quality are not very successful when it comes to fertilizing eggs. A new study on seed beetles by Swedish and Danish scientists Göran Arnqvist and Trine Bilde shows that when a female mates with several males, the males of low genetic quality are the most successful in fertilizing eggs. The study is published in this week's issue of Science. http://www.physorg.com/news165158293.html Biology Thu, 25 Jun 2009 15:10:06 EST news165158293 (PhysOrg.com) -- For millions of years, dinosaurs have been considered the largest creatures ever to walk on land. While they still maintain this status, a new study suggests that some dinosaurs may actually have weighed as little as half as much as previously thought. http://www.physorg.com/news165147675.html Other Sciences Thu, 25 Jun 2009 11:21:56 EST news165147675 Whether baby lizards will turn out to be male or female is a more complicated question than scientists would have ever guessed, according to a new report published online on June 4th in Current Biology. The study shows that for at least one lizard species, egg size matters. http://www.physorg.com/news163342512.html Biology Thu, 04 Jun 2009 13:56:04 EST news163342512 Researchers from the Peninsula Medical School in Exeter have synthesized a new molecule which releases hydrogen sulfide (H2S) - the gas that gives rotten eggs their characteristic smell and which has recently been found to be produced naturally in the body - and discovered that it could in time lead to a range of new, safer and effective anti-inflammatory drugs for human use. http://www.physorg.com/news162106769.html Biology Thu, 21 May 2009 06:40:14 EST news162106769 (AP) -- A species of birds able to fly immediately after hatching from eggs buried beneath the tropical sand has just been given its own private beach in eastern Indonesia, a conservation group said Friday. http://www.physorg.com/news161583289.html Biology Fri, 15 May 2009 05:15:44 EST news161583289 (AP) -- Paleontologists say a 75-million-year-old turtle fossil uncovered in southern Utah has a clutch of eggs inside, making it the first prehistoric pregnant turtle found in the United States. http://www.physorg.com/news161026326.html Other Sciences Fri, 08 May 2009 18:32:23 EST news161026326 Cryoprotectants needed to preserve eggs for reproduction need to be given in stages, albeit rapid ones, say scientists who have developed a mathematical model that predicts optimal time for loading and unloading these drugs. http://www.physorg.com/news160232899.html Biology Wed, 29 Apr 2009 14:08:39 EST news160232899 Driven mostly by hope, two California families will travel more than 6,000 miles to China for an experimental stem-cell treatment for their children. http://www.physorg.com/news160222416.html Medicine & Health Wed, 29 Apr 2009 11:14:15 EST news160222416 South Korea on Wednesday conditionally lifted a ban on stem cell research using human eggs, three years after outlawing the practice because a scientist was found to have faked his work. http://www.physorg.com/news160208331.html Biology Wed, 29 Apr 2009 07:19:32 EST news160208331 During the last 540 million years, the earth's oxygen levels have fluctuated wildly. Knowing that the dinosaurs appeared around the time when oxygen levels were at their lowest at 12%, Tomasz Owerkowicz, Ruth Elsey and James Hicks wondered how these monsters coped at such low oxygen levels. But without a ready supply of dinosaurs to test their ideas on, Owerkowicz and Hicks turned to a modern relative: the alligator. http://www.physorg.com/news159169181.html Biology Fri, 17 Apr 2009 06:40:33 EST news159169181 (PhysOrg.com) -- Michael Knell carried a 75-million-year-old turtle into Bozeman Deaconess hospital recently, then laid it carefully on the bed that slides into the CT scanner. http://www.physorg.com/news159024390.html Other Sciences Wed, 15 Apr 2009 14:27:52 EST news159024390 (PhysOrg.com) -- An egg collected by Charles Darwin while on HMS Beagle - and thought to be the last such specimen known to exist - has been rediscovered by an octogenarian volunteer at Cambridge University's Zoology Museum. http://www.physorg.com/news158589880.html Biology Fri, 10 Apr 2009 13:45:30 EST news158589880 Kim Harper started a career before starting a family. After graduating from Michigan State University in 1990, she traveled, earned a law degree and began working as an attorney. When Harper married in 2006, she and her husband, Jeff, hoped a baby would soon follow. http://www.physorg.com/news158567193.html Medicine & Health Fri, 10 Apr 2009 07:27:45 EST news158567193 In contrast to women, men are fertile throughout life, but research at the Sahlgrenska Academy, University of Gothenburg, Sweden, has now shown that a fertilising sperm can get help from the egg to rejuvenate. The result is an important step towards future stem cell therapy. http://www.physorg.com/news157201393.html Biology Wed, 25 Mar 2009 12:03:42 EST news157201393 Many couples who have trouble conceiving a child have turned to a process known as in vitro fertilization. The resulting embryos are then transferred back into the woman or placed in storage. More than 400,000 embryos are currently in storage in the United States. The quality of the egg is often the single greatest factor in the viability of the embryo, yet fertility experts lack a good method for assessing the eggs. http://www.physorg.com/news157037958.html Medicine & Health Mon, 23 Mar 2009 14:39:48 EST news157037958 Ecological changes caused by humans affect natural biodiversity. For example, the eutrophication of Greifensee and Lake Constance in the 1970s and 1980s led to genetic changes in a species of water flea which was ultimately displaced. Despite the fact that water quality has since been significantly improved, this species has not been re-established. This was demonstrated by researchers from Eawag and from two German universities (Frankfurt and Konstanz), who analysed genetic material from Daphnia eggs up to 100 years old. http://www.physorg.com/news156104885.html Biology Thu, 12 Mar 2009 19:28:40 EST news156104885 Researchers in Canada are reporting evidence that eggs - often frowned upon for their high cholesterol content - may reduce another heart disease risk factor - high blood pressure. http://www.physorg.com/news154359866.html Chemistry Fri, 20 Feb 2009 13:45:12 EST news154359866 A research review published recently in Nutrition Today affirms that the high-quality protein in eggs makes a valuable contribution to muscle strength, provides a source of sustained energy and promotes satiety. High-quality protein is an important nutrient for active individuals at all life stages, and while most Americans consume the recommended dietary allowance (RDA) for protein, additional research suggests that some Americans are not consuming enough high-quality protein to achieve and maintain optimal health. http://www.physorg.com/news154079560.html Medicine & Health Tue, 17 Feb 2009 07:53:08 EST news154079560 Since the cloning of Dolly the Sheep over a decade ago, somatic cell nuclear transfer (SCNT) has been considered a promising way to generate human, patient-specific stem cells for therapeutic applications. The shortage of human donor eggs has led to efforts to substitute animal oocytes. http://www.physorg.com/news152802480.html Biology Mon, 02 Feb 2009 13:08:34 EST news152802480 Until now, it has been difficult to prove that fast-swimming sperms have an advantage when it comes to fertilizing an egg. But now a research team at Uppsala University can demonstrate that unfaithful females of the cichlid fish species influence the males` sperms. Increased competition leads to both faster and larger sperms, and the research findings now being published in the scientific journal PNAS, Proceedings of the National Academy of Sciences, thus show that the much mythologized size factor does indeed count. http://www.physorg.com/news151672434.html Biology Tue, 20 Jan 2009 11:14:54 EST news151672434 Two-thirds of women who donated eggs to fertility clinics reported satisfaction with the process, but 16 percent complained of subsequent physical symptoms and 20 percent reported lasting psychological effects, according to the first study to examine the long-term effects of donation. http://www.physorg.com/news148740802.html Medicine & Health Wed, 17 Dec 2008 12:53:22 EST news148740802